How can I enforce where employees can not close the ticket unless fully paid?

[DQ]

Hello,
 I am going to use Samba for my ice-cream store where ticket must not be closed until paid.  Many times when I try to end work-period, it gives error saying there are open pending tickets and work-period can not be closed. 

When I select All Tickets, I can see open ticket items.

How can I enforce where employees can not keep open ticket items? It must be paid or order should be canceled.

[evail]

What department type are you using? If you are using "A La Carte" then the procedure should be

Take Order>Print Bill>Settle

These 3 processes should be done by the employee. Unless the employee finishes the last process "Settle" the order will remain open.
Tel your employee to finish the process always.

[DQ]

Thanks for your help.  I am using FastFood as we don't have sitting tables.

[evail]

If you are using Fast Food type then SambaPOS will not allow any open tickets.